My experience with developing a fruit forest in Pahoa (Big Island) Hawaii on 2 acres was a positive one. The black, deep, rich soil on the property was so easy to grow anything and with 140" of rainfall per year watering was never a problem. I could literally eat a piece of fruit from my kitchen and walk out to my garden and punch the seed into the bed and it would sprout a sapling in a week or two. In Hawaii fruit trees like Mangosteen, Persimmon, Sour Sop, Dragonfruit (not a tree), Jauticaba, etc, fetched a high price at the local markets even though they were fairly prolific with local resident/growers. Guava and avacados were like weeds growing wild on the property which as a draw back attracted the wild pigs during the fruiting seasons. All and all it was a wonderful learning expereince but less than 2 acres was more work than I could manage by myself so I ended up selling the property without issue making a handsom profit.